D'Arcy Norman outlines a Firefox plugin that diagrams links between websites he's visited and also websites connected to those websites. It's an interesting look, because we see the blog and Twitter stuff he reads, and then the sources in the background. He writes, "the non-glowing icons are sites that either fed media to the sites I did visit, or who tracked my activity as a third party." Now what I see when I look at this is that he depends a lot on social media, and this leads him pretty quickly to mass media sites on the net - I recognize the Yahoo logo, YouTube, Boing Boing. Google, and a bunch of others. I might try the app myself - I think that since my reading pattern is very different that the graph will look quite different as well.